Piyuan Lin

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Question classification plays a crucial important role in the question answering system because categorizing a given question is beneficial to identify an answer in the documents. The goal of question classification is to accurately assign labels to question based on expected answer type. Support vector machines (SVMs) have been proved as an excellent tool(More)
Forecasting the price of chicken plays a crucial important role in the poultry raising industry because it is beneficial to maximize the profit and minimize the risk. Its goal is to accurately predict the price in future based on the data obtained. ARMA is the classical time series prediction method and wavelet transform is well known to work well for(More)
More and more Chinese users express their views through Micro-blogging service during the rapid growth of the Internet today. Clustering these short Chinese texts to get knowledge automatically is an important field for many companies and governments. Because of 140 characters limit, users present any information with only a few words. Considering the view(More)
Topic mining on microblogging sites with sheer scale of instance messages and social network information, such as Twitter, is a hard and challenging problem. Although many text mining techniques and generative probabilistic models have been developed for static plain-text corpus, they are inclined to achieve unsatisfactory results in microblogs without(More)